After these proposals, documentation of the Garza and Mamulique languages was brought to light, and Goddard (1979) believes that there is sufficient similarity between them and Comecrudan for them to be considered genetically related. He rejects all other relationships.

Powell's original Coahuiltecan, renamed Pakawan and extended with Garza and Mamulique, has been defended by Manaster Ramer (1996), who also sees a relationship with Karankawa probable and Atakapa as a more distant possibility.

Goddard, Ives. (1999). Native languages and language families of North America (rev. and enlarged ed. with additions and corrections). [Map]. Lincoln, NE: University of Nebraska Press (Smithsonian Institution). (Updated version of the map in Goddard 1996). ISBN0-8032-9271-6.